clearerr

Go Up to stdio.h Index

Header File

stdio.h

Category

Input/output Routines

Prototype

void clearerr(FILE *stream);

Description

Resets error indication.

clearerr resets the named stream's error and end-of-file indicators to 0. Once the error indicator is set, stream operations continue to return error status until a call is made to clearerr or rewind. The end-of-file indicator is reset with each input operation.

Return Value

None.

Example

#include <stdio.h>
int main(void)
{
   FILE *fp;
   char ch;
   /* open a file for writing */
   fp = fopen("DUMMY.FIL", "w");
   /* force an error condition by attempting to read */
   ch = fgetc(fp);
   printf("%c\n",ch);
   if (ferror(fp))
   {
      /* display an error message */
      printf("Error reading from DUMMY.FIL\n");
      /* reset the error and EOF indicators */
      clearerr(fp);
   }
   fclose(fp);
   return 0;
}

Portability

POSIX	Win32	ANSI C	ANSI C++
+	+	+	+